The Research and Development (R&D) Tax Credit, under IRC Section 41, provides U.S. physicians and medical practices a dollar for dollar federal tax credit for activities advancing scientific or technological knowledge in healthcare. This credit offsets federal income tax, and qualifying start-ups (generally under $5 million of gross receipts and within their first five years of revenue) can instead apply it against payroll taxes, which helps practices that are not yet profitable. Physicians qualify if their work involves systematic experimentation to resolve technological uncertainties, such as improving patient outcomes or developing new protocols.

Separate from the credit, the 2025 tax law restored full first-year deductibility of domestic research costs (they no longer have to be spread over five years, as they did for 2022 through 2024). The credit and the deduction interact, and small businesses may have catch-up options for the capitalized 2022 to 2024 costs, so we coordinate both when we claim the credit.

Qualified Research Expenditures (QREs)

If activities qualify, these expenses can be included:

  1. Wages (Largest Component)
  2. Supplies
  3. Contract Research (65%)
  4. Cloud Computing

The Four Part Test

To qualify for the R&D credit, an activity must satisfy ALL four requirements:

1. Permitted Purpose

The research must aim to develop or improve the functionality, performance, reliability, or quality of a business component (product, process, technique, formula, or software).

2. Technological in Nature

The research must rely on principles of physical science, biological science, engineering, or computer science.

3. Elimination of Uncertainty

There must be uncertainty regarding the capability, method, or appropriate design of the product or process at the outset.

4. Process of Experimentation

The taxpayer must evaluate alternatives through modeling, simulation, systematic trial and error, or other methods to resolve the uncertainty.

Documentation Requirements

The IRS closely scrutinizes R&D credits. Essential documentation includes:

Contemporaneous Records

  • Time tracking for employees engaged in R&D activities
  • Project logs and research notes
  • Meeting minutes and progress reports

Technical Documentation

  • Descriptions of uncertainty faced at project outset
  • Documentation of alternatives evaluated
  • Records of experimentation process and results
  • Explanation of technological challenges

Financial Records

  • Payroll records allocated to R&D activities
  • Supply invoices tied to specific projects
  • Contract research agreements

Project by Project Analysis

  • Identification of each qualifying project
  • Four-part test analysis for each activity
  • Calculation of QREs by project

How is the credit calculated?

The calculation of the R&D Tax Credit can be quite complicated, but, generally, there are 2 methods that can be used.

1. Regular Research Credit (RRC) Method

Formula:

  • Credit = 20% × (Current Year QREs − Base Amount)

Base Amount:

  • Base Amount = Fixed-Base Percentage × Average Annual Gross Receipts (prior 4 years)
  • Fixed-base percentage is usually 3% for start ups and capped at 16%.

**This is the less common method due to the "Base Amount" requirements.

2. Alternative Simplified Credit (ASC) Method (Most Common Method)

Formula:

  • Credit = (Current Year QREs − 50% × Average QREs for prior 3 years) × 14%
  • If no prior research expenses exist, credit = 6% of current-year QREs.

Example:

  • Prior 3-year average QREs = $400,000
  • Current-year QREs = $700,000
  • ASC Credit = ($700,000 – $200,000) × 14% = $70,000

Special Considerations for Physicians

S Corporations and Partnerships

The credit flows through to shareholders/partners on Schedule K-1. Each owner claims their share on personal returns.

Carry forward

Unused credits can be carried forward for 20 years.

State Credits

Many states offer their own R&D credits. California, for example, offers a credit of 15% of qualified research expenses above a base amount (a separate 24% rate applies only to basic research payments, mostly corporate payments to universities). For tax years beginning in 2025 or later, California also allows an alternative simplified election of 3% of expenses above 50% of the prior three-year average. The credit has no carryback but carries forward indefinitely.

What to do next?

If you think you may qualify for this credit, don't hesitate to reach out to your team at Doc Wealth. We may be able to provide you with an initial assessment, or introduce you to one of our trusted R&D Credit partners if warranted.